:root {
  --color-primary: #0b2a4a;
  --color-blue: #1367d1;
  --color-light-blue: #edf6fb;
  --color-green: #e9f4ef;
  --color-text: #18202a;
  --color-muted: #65717d;
  --color-white: #ffffff;
  --color-border: #dce3e8;
  --color-line: #eef2f5;
  --color-bg: #fbfdff;

  --container-width: 1200px;
  --space-side: clamp(20px, 5vw, 72px);
  --font-base: 16px;
  --radius: 8px;
  --shadow-soft: 0 20px 55px rgba(11, 42, 74, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family:
    "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo,
    system-ui, sans-serif;
  font-size: var(--font-base);
  line-height: 1.85;
}

body.is-menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  padding: 10px 14px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px var(--space-side);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 227, 232, 0.72);
  backdrop-filter: blur(14px);
  transition: padding 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  padding-block: 12px;
  box-shadow: 0 10px 30px rgba(11, 42, 74, 0.08);
}

.logo img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.global-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 30px);
  font-size: 0.92rem;
  font-weight: 700;
}

.global-nav a {
  color: var(--color-primary);
}

.nav-cta {
  padding: 10px 15px;
  border: 1px solid var(--color-blue);
  border-radius: var(--radius);
  color: var(--color-blue) !important;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
}

.menu-button span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--color-primary);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: 100svh;
  padding: 126px var(--space-side) 64px;
  background: var(--color-white);
}

.hero-copy {
  max-width: 620px;
}

.section-label,
.category,
.case-number {
  margin: 0 0 14px;
  color: var(--color-blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--color-primary);
  font-size: clamp(2.8rem, 6.2vw, 5.8rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  color: var(--color-primary);
  font-size: clamp(2rem, 3.7vw, 4.2rem);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  color: var(--color-primary);
  font-size: clamp(1.1rem, 1.5vw, 1.32rem);
  line-height: 1.55;
}

.hero-lead {
  margin: 28px 0 0;
  font-size: clamp(1.05rem, 1.7vw, 1.32rem);
  font-weight: 700;
}

.hero-note {
  margin: 18px 0 0;
  color: var(--color-muted);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 30px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  line-height: 1.3;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.button-light {
  background: var(--color-white);
  color: var(--color-primary);
}

.hero-visual {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.hero-visual img,
.about-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 500ms ease;
}

.hero-visual:hover img,
.about-image:hover img {
  transform: scale(1.025);
}

.section {
  width: min(var(--container-width), calc(100% - var(--space-side) * 2));
  margin-inline: auto;
  padding: clamp(76px, 10vw, 132px) 0;
  border-top: 1px solid var(--color-border);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(200px, 0.42fr) minmax(0, 0.58fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  margin-bottom: clamp(34px, 5vw, 72px);
}

.section-head.wide {
  display: block;
  max-width: 880px;
}

.section-head > p:not(.section-label) {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.problem-section {
  border-top: 0;
}

.issue-list,
.service-layout,
.case-list,
.faq-list {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.issue-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.issue-list article,
.service-layout article,
.case-list article,
.faq-list details {
  background: var(--color-white);
  padding: clamp(22px, 3vw, 34px);
}

.issue-list p,
.service-layout li,
.case-list p,
.text-columns p,
.codex-note p,
.step-list p,
.about-copy p,
.faq-list p,
.contact-section p,
.price-box p {
  color: var(--color-muted);
}

.text-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 5vw, 68px);
  max-width: 980px;
}

blockquote {
  margin: clamp(36px, 5vw, 64px) 0 0;
  padding: 24px 0 24px 28px;
  border-left: 4px solid var(--color-blue);
  color: var(--color-primary);
  font-size: clamp(1.3rem, 2.3vw, 2rem);
  font-weight: 800;
  line-height: 1.55;
}

.service-layout {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.service-layout ul {
  margin: 18px 0 0;
  padding-left: 1.2em;
}

.codex-note {
  margin-top: 28px;
  padding: clamp(26px, 4vw, 42px);
  background: var(--color-light-blue);
  border-left: 5px solid var(--color-blue);
}

.program-section {
  width: 100%;
  max-width: none;
  padding-inline: var(--space-side);
  background: var(--color-light-blue);
}

.program-section .section-head,
.program-section .step-list {
  width: min(var(--container-width), 100%);
  margin-inline: auto;
}

.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 0;
  list-style: none;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.step-list li {
  min-height: 240px;
  padding: clamp(24px, 3vw, 34px);
  background: var(--color-white);
}

.step-list span {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--color-blue);
  font-size: 0.78rem;
  font-weight: 850;
}

.case-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-section {
  text-align: center;
}

.price-section .section-head {
  display: block;
}

.price-box {
  max-width: 780px;
  margin-inline: auto;
  padding: clamp(32px, 6vw, 62px);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.price {
  margin: 0;
  color: var(--color-primary) !important;
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 1;
}

.price-detail,
.price-message {
  font-weight: 800;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 5vw, 76px);
  align-items: center;
}

.about-image {
  overflow: hidden;
  border-radius: var(--radius);
}

.name {
  color: var(--color-text) !important;
  font-size: 1.1rem;
}

.faq-list {
  background: transparent;
  border: 0;
}

.faq-list details {
  border-top: 1px solid var(--color-border);
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--color-border);
}

.faq-list summary {
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 800;
}

.contact-section {
  padding: clamp(72px, 10vw, 128px) var(--space-side);
  background: var(--color-primary);
  color: var(--color-white);
}

.contact-section > div {
  width: min(920px, 100%);
}

.contact-section .section-label,
.contact-section h2,
.contact-section p {
  color: var(--color-white);
}

.contact-section p {
  max-width: 680px;
  opacity: 0.86;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px var(--space-side);
  color: var(--color-muted);
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.mobile-fixed-cta {
  display: none;
}

[data-fade] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

[data-fade].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1020px) {
  .hero,
  .section-head,
  .about-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .issue-list,
  .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  body {
    padding-bottom: 74px;
  }

  .site-header {
    padding: 14px 20px;
  }

  .logo img {
    width: 46px;
    height: 46px;
  }

  .menu-button {
    display: block;
  }

  .global-nav {
    position: fixed;
    inset: 69px 14px auto;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
  }

  .global-nav.is-open {
    display: grid;
  }

  .global-nav a {
    padding: 13px 10px;
  }

  .nav-cta {
    margin-top: 6px;
    text-align: center;
  }

  .hero {
    padding: 104px 20px 58px;
  }

  h1 {
    font-size: clamp(2.45rem, 13vw, 4rem);
  }

  .section {
    width: calc(100% - 40px);
    padding-block: 72px;
  }

  .service-layout,
  .issue-list,
  .step-list,
  .case-list,
  .text-columns {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: block;
  }

  .mobile-fixed-cta {
    position: fixed;
    z-index: 90;
    left: 14px;
    right: 14px;
    bottom: 14px;
    display: flex;
    justify-content: center;
    min-height: 52px;
    padding: 13px 18px;
    border-radius: var(--radius);
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 850;
    box-shadow: 0 12px 32px rgba(11, 42, 74, 0.24);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  [data-fade] {
    opacity: 1;
    transform: none;
  }
}